JPH061870Y2 - Seat slide device for automobile - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seat slide device for supporting a seat of an automobile so that the front and rear positions thereof can be adjusted, and more particularly to a biasing member for biasing a latch member thereof. .

[Conventional technology]

Conventional automobile seat slide devices include, for example
Some are disclosed in Japanese Patent Publication No. 61-94439.

This device is attached to the lower rail fixed to the floor of the vehicle body,
An upper rail fixed to the lower part of the seat is fitted so as to be movable back and forth, a lock plate having a plurality of locking holes is fixed to the lower rail, and a latch member that can be engaged with and disengaged from this locking hole is attached to the upper rail. One side of the coil spring fixed to the operation shaft pivotally attached to the curl-shaped support portion of the bracket provided on the side and wound around the rear end of the operation shaft is attached to the bracket.
Similarly, the other end is locked in the slit of the actuating shaft to bias the latch member in the engaging direction via the actuating shaft.

[Problems to be solved by the device]

In the conventional device as described above, since the coil spring that biases the latch member in the engaging direction is wound around the end of the operating shaft and attached, the operating shaft is attached by the length of the coil spring. It has to project backwards.

Therefore, the operating shaft becomes longer by that much, and it is necessary to design in consideration of the mounting space, and the mounting work is troublesome, which adversely affects the production efficiency.

In addition, since the coil springs are usually coated with grease to make the operation of the operating shaft smooth, if you put your feet under the seat cushion, the shoes may be contaminated with grease or slipped. There is a problem.

An object of the present invention is to provide a vehicle seat slide device that solves the above conventional problems.

[Means for Solving the Problems]

To achieve the above object, the device of the present invention is such that a lower rail fixed to a floor side is fitted with an upper rail fixed to a seat side so as to be slidable in a longitudinal direction thereof, and a base portion is fixed to the upper rail side. Formed on the bracket,
A plurality of engaging portions of the latch member fixed to the actuating shaft are provided on the lower rail side along the longitudinal direction while pivotally supporting the actuating shaft on the curl-shaped support portion facing the longitudinal direction. Of the latch member, and the biasing member biases the engaging portion of the latch member in the engaging direction of engaging the locking hole, thereby engaging the engaging portion of the latch member. In a vehicle seat slide device in which the upper rail can be adjusted to a front-rear position by being engaged with and disengaged from a stop hole, the biasing member is provided on the upper rail side by a plurality of claw portions formed on a base portion of the bracket. And a biasing portion extending from the base portion toward the engaging portion of the latch member to cover the latch member from the outside and to abut the latch member so as to bias the latch member in the engaging direction. L-shaped plate having a It is characterized in that it is formed by the roots.

[Action]

According to the present invention, the biasing portion of the substantially L-shaped leaf spring can contact the latch member so as to cover the latch member from the outside, and the projecting portion of the base portion of the biasing portion of the plurality of brackets fixed to the upper rail side. With the claw portions, the movement in all directions in the front-rear direction, the lateral direction, and the up-down direction is restricted, and the claw portion is fixed to the upper rail side.

Therefore, the engaging portion of the latch member can be biased in the direction of engaging with the engaging hole of the lower rail without projecting the actuating shaft rearward and exposing the grease adhering surface to the outside.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

(1) is a lower rail, the cross-sectional shape of which is a substantially horizontal base piece.
(2), side piece (3) standing up from both sides of the base piece (2), and side piece
It is composed of an upper piece (4) extending outward from the tip of (3).

Mounting brackets (5) are fixed to the front and rear ends of the lower rail (1) by rivets or welding. By fixing this mounting bracket (5) to the floor of the vehicle body with appropriate bolts and nuts (not shown), the lower rail
(1) is attached to the floor of the vehicle body with its longitudinal direction facing forward and backward.

The right side of FIGS. 1 and 2 is the front side when mounted on the floor.

On one side piece (3), a plurality of rectangular locking holes (6) are formed at regular intervals in the longitudinal direction (front-back direction).

(7) is an upper rail slidably fitted to the lower rail (1), which is substantially parallel to the base piece (2) of the lower rail (1),
The base piece (8) located on the upper piece (4), the side piece (9) hanging from both sides of the base piece (8), and extending inward from the lower end of the side piece (9). It consists of a lower piece (10).

A roller (11) is provided between the base piece (2) of the lower rail (1) and the base piece (8) of the upper rail (7), and the upper piece (4) of the lower rail (1).
The balls (12) are rollably fitted between the lower surface of the upper rail (7) and the upper surface of the lower piece (10) of the upper rail (7), so that the upper rail (7) is connected to the lower rail (1). It can slide in the front-back direction.

The upper rail (7) has mounting holes formed in the front and back of the base piece (8).
With (8a), at the bottom of the seat cushion (not shown),
Mounted with bolts, nuts, etc.

(13) is an operating axis that is almost parallel to the upper rail (7),
This operating shaft (13) is attached to the bracket (14) fixed to the side piece (9) of the upper rail (7) and the tip of the bracket (15) fixed to the base piece (8) of the upper rail (7). It is rotatably attached to a pair of front and rear support portions (16) formed in a curl shape.

The length of the operating shaft (13) is such that the rear end is
6) It is set so as not to project further rearward.

Between the front and rear support (16) of the working shaft (13), lower rail (1)
A plurality of engaging portions (17a) that prevent the upper rail (7) from moving in the longitudinal direction by engaging with one of the locking holes (6) formed in the side surface (3) of the lower rail (1). The base portion of the latch member (17) including is fixed.

As shown in FIG. 4, the base (15a) fixed on the base (8) of the upper rail (7) of the bracket (15) has a tongue that stands up from the outer edge of the foldable base (15a). First claw (15
b) and a tongue-shaped second claw portion (15c), which is formed in the front and rear of the base portion (15a), is formed.

(18) is fixed upward from a proper position of the operating shaft (13), and is connected to a similar operating shaft of the other seat slide (not shown) by an appropriate connecting rod etc. It is a connecting bar for making the (13) move synchronously with each other.

Reference numeral (19) is a substantially L-shaped leaf spring that constantly urges the latch member (17) in the engaging direction in which the engaging portion (17a) engages with the locking hole (6), and has a base portion (19a). The latch member (17) from the one end of the overhanging part (19c), which protrudes back and forth with the step parts (19b) (19b)
A biasing portion (19d) is formed along the outer surface of the latch member (17) so as to contact the outer surface of the latch member (17) from the outside so as to hang down in the direction of the engaging portion (17a).

This leaf spring (19), as shown in FIG.
The base portion (19a) and the overhanging portion (19c) are fitted between the claw portion (15b) standing upright from the outer edge of 5) and the claw portions (15c) (15c) standing upright from the central portion facing it, and The claws (15b) are on the outer edge of the base (19a), and the claws (15c) (15c) are on the front and rear stepped parts (19c) of the overhanging part (19c).
b) (19b) in a locked state, by bending the claw portions (15b) (15c) (15c) in the directions of the arrows, the base portion (19a),
Brackets (15) that do not move back and forth, sideways and up and down
It is securely fixed on the base part (15a) of the
d) is installed so as to cover the latch member (17) from the outside and urge it in the engagement direction.

As described above, by installing the leaf spring (19), the coil spring attachment portion projecting rearward from the support portion (16) of the bracket (15), which was conventionally required, is omitted, and the operating shaft (13)
Can be shortened by that amount. Also, the grease-attached surface is not exposed to the outside and the claw (1
5b) (15c) can be fixed by a simple operation such as bending work.

Bent end with the front end of the operating shaft (13) bent to one side
A handle (20) is fixedly fitted to (13a).

Against the biasing force of the biasing portion (19d) of the leaf spring (19), the handle (20) is operated to move the operating shaft (13) and the latch member (17),
By rotating it counterclockwise in FIG. 5, while elastically deforming the biasing portion (19d) of the leaf spring (19) outward,
The engaging portion (17a) of the latch member (17) is disengaged from the locking hole (6), and the upper rail (7) can be moved back and forth. By engaging the engaging portion (17a) with the locking hole (6) at an appropriate position, the upper rail (7) can be fixed at an appropriate position.

[Effect of device]

According to the present invention, the base portion of the leaf spring is fixed to the upper rail side by the claw portion formed on the bracket, and the biasing portion covers the latch member from the outside so that the latch member can be biased in the engaging direction. .

Therefore, it is not necessary to wind and lock the coil spring around the end portion of the actuation shaft as in the conventional case, the mounting work can be simplified, and the length of the actuation shaft can be set short. Further, the rearward protrusion from the support portion is eliminated, the grease-adhered surface is not exposed to the outside, and there is no risk of soiling the shoes or the like when the foot is put in the lower portion of the seat cushion.

[Brief description of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is a top view of a seat slide device, FIG. 2 is a side view from the direction of arrow II in FIG. 1, and FIG. 3 is FIG. FIG. 4 is a perspective view of a main part in the direction of arrow III in FIG. 4, FIG. 4 is a perspective view of a main part in the direction of arrow IV in FIG. 1 before bending the claw portion of the bracket, and FIG. It is a front view from the arrow V direction in FIG. (1) Lower rail, (6) Locking hole (7) Upper rail, (8) Base piece (13) Actuating shaft, (15) Bracket (15a) Base, (15b) (15c) Claw (16) Support, (17) Latch member (17a) Engagement part, (19) Leaf spring (19a) Base part, (19c) Overhang part (19d) Energizing part

Claims (1)

[Scope of utility model registration request] 1. A lower rail fixed to the floor side is fitted with an upper rail fixed to the seat side so as to be slidable in the longitudinal direction thereof, and a base portion is formed on a bracket fixed to the upper rail side, and A curl-shaped support portion facing the longitudinal direction pivotally supports the operating shaft, and a plurality of engaging portions of the latch member fixed to the operating shaft are provided on the lower rail side along the longitudinal direction thereof. The engaging portion of the latch member can be engaged with and disengaged from the engaging hole, and the urging member urges the engaging portion of the latch member in the engaging direction to engage with the engaging hole to lock the engaging portion of the latch member. In an automobile seat slide device capable of adjusting the upper rail to a front-rear position by engaging and disengaging with a hole, the biasing member is attached to the upper rail side by a plurality of claw portions formed on a base portion of the bracket. Fixed And a biasing portion that extends from the base toward the engaging portion of the latch member, covers the latch member from the outside, and abuts the latch member so as to bias the latch member in the engaging direction. A seat slide device for an automobile, which is formed of a substantially L-shaped leaf spring.